The Comcast firmware on Cisco DPC3939 (firmware version…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-200.
Summary
The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421733-160420a-CMCST); Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST); Cisco DPC3939B (firmware version dpc3939b-v303r204217-150321a-CMCST); Cisco DPC3941T (firmware version DPC3941_2.5s3_PROD_sey); and Arris TG1682G (eMTA&DOCSIS version 10.0.132.SIP.PC20.CT, software version TG1682_2.2p7s2_PROD_sey) devices does not include the HTTPOnly flag in a Set-Cookie header for administration applications, which makes it easier for remote attackers to obtain potentially sensitive information via script access to cookies.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:dpc3939_firmware:dpc3939-p20-18-v303r20421733-160420a-cmcst:*:*:*:*:*:*:* | dpc3939-p20-18-v303r20421733-160420a-cmcst | Vulnerable | Cisco |
| cpe:2.3:h:cisco:dpc3939:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:dpc3939_firmware:dpc3939-p20-18-v303r20421746-170221a-cmcst:*:*:*:*:*:*:* | dpc3939-p20-18-v303r20421746-170221a-cmcst | Vulnerable | Cisco |
| cpe:2.3:o:cisco:dpc3939b_firmware:dpc3939b-v303r204217-150321a-cmcst:*:*:*:*:*:*:* | dpc3939b-v303r204217-150321a-cmcst | Vulnerable | Cisco |
| cpe:2.3:h:cisco:dpc3939b:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:dpc3941t_firmware:dpc3941_2.5s3_prod_sey:*:*:*:*:*:*:* | dpc3941_2.5s3_prod_sey | Vulnerable | Cisco |
| cpe:2.3:h:cisco:dpc3941t:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:commscope:arris_tg1682g_firmware:10.0.132.sip.pc20.ct:*:*:*:*:*:*:* | 10.0.132.sip.pc20.ct | Vulnerable | CommScope, Inc. |
| cpe:2.3:o:commscope:arris_tg1682g_firmware:tg1682_2.2p7s2_prod_sey:*:*:*:*:*:*:* | tg1682_2.2p7s2_prod_sey | Vulnerable | CommScope, Inc. |
| cpe:2.3:h:commscope:arris_tg1682g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | CommScope, Inc. |
- cpe:2.3:o:cisco:dpc3939_firmware:dpc3939-p20-18-v303r20421733-160420a-cmcst:*:*:*:*:*:*:* Versions dpc3939-p20-18-v303r20421733-160420a-cmcst Vulnerable ·Cisco
- cpe:2.3:h:cisco:dpc3939:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:dpc3939_firmware:dpc3939-p20-18-v303r20421746-170221a-cmcst:*:*:*:*:*:*:* Versions dpc3939-p20-18-v303r20421746-170221a-cmcst Vulnerable ·Cisco
- cpe:2.3:o:cisco:dpc3939b_firmware:dpc3939b-v303r204217-150321a-cmcst:*:*:*:*:*:*:* Versions dpc3939b-v303r204217-150321a-cmcst Vulnerable ·Cisco
- cpe:2.3:h:cisco:dpc3939b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:dpc3941t_firmware:dpc3941_2.5s3_prod_sey:*:*:*:*:*:*:* Versions dpc3941_2.5s3_prod_sey Vulnerable ·Cisco
- cpe:2.3:h:cisco:dpc3941t:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:commscope:arris_tg1682g_firmware:10.0.132.sip.pc20.ct:*:*:*:*:*:*:* Versions 10.0.132.sip.pc20.ct Vulnerable ·CommScope, Inc.
- cpe:2.3:o:commscope:arris_tg1682g_firmware:tg1682_2.2p7s2_prod_sey:*:*:*:*:*:*:* Versions tg1682_2.2p7s2_prod_sey Vulnerable ·CommScope, Inc.
- cpe:2.3:h:commscope:arris_tg1682g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·CommScope, Inc.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-9492
- 2026-10-03 Alias added: GHSA-8v98-rw2q-4wmp
References
Sources
- CVE-2017-9492 · CVE Program
- CVE-2017-9492 · NVD
- FIRST EPSS
- GHSA-8v98-rw2q-4wmp · GitHub Advisory Database · CC BY 4.0
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